I'll echo that, I got 40 coins as well, and I haven't done the survey.
Found a glitch on Classic Seaside Hill, but it pretty much only works when you have Skills, unless someone can get up there with a creative Spin Dash jump. Basically, equip the Aqua Shield, and take the high route at the start. (Trivial with the Aqua Shield's bouncing.) There's that room with the Red Star Ring and 1up, with the two raising and lowering blocks beside it obstructing your path, and a path with some rings in the water. Just use your bounce move, and with the right timing you should be able to clear the top of the wall. I actually thought it might be sort of intentional, but it's just flat area.
Get up a good Spin Dash, and leap off the edge, a full leap, a cannon will most likely catch you at the end and blast you into the next area... without the floors being loaded up. It's like the other versions of the glitch, collisions still work, just don't expect to be able to see where you're going that well. It lasts for about a third of the stage, eventually it loads in (or keeps loaded?) the segment after another cannon transition.
I don't really want to mess with my capture card, and I don't have the PC version, so someone else can post a video if they want to bother.